linux下查看CPU是几核的
查看有几个CPU
more /proc/cpuinfo |grep "physical id"|uniq|wc -l
每个cpu是几核(假设cpu配置相同)
more /proc/cpuinfo |grep "physical id"|grep "0"|wc -l cat /proc/cpuinfo | grep processor
1. 查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
2. 查看逻辑CPU的个数
#cat /proc/cpuinfo |grep "processor"|wc -l
3. 查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq
4. 查看CPU的主频
#cat /proc/cpuinfo |grep MHz|uniq # uname -a Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
(查看当前操作系统内核信息)
# cat /etc/issue | grep Linux Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
(查看当前操作系统发行版信息)
# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c 8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz
(看到有8个逻辑CPU, 也知道了CPU型号)
# cat /proc/cpuinfo | grep physical | uniq -c 4 physical id : 0 4 physical id : 1
(说明实际上是两颗4核的CPU)
# getconf LONG_BIT 32
(说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit)
# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l 8
(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit)
推荐:《linux教程》
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